Car-roof.



N0. 705,888. I Patented July 29, I902.

A.- W. WILGOX.

GAR RQOF.

(Applicatxou bled Apr. '7. 1902 (No Model.)

PATENT FFIcE.

ALVA w. wrhcox, or NEWARK, OHIO.

CAR-ROOF.

SPECIFICATION forming part of Letters Patent N 0. 705,888, dated July 29, 1902.

Application filed April '7, 1902.

To all whom, it may concern.-

Beit known that I, ALVA W.WILoox, a citizen of the United States, residing at Newark, in the county of Licking, State of Ohio, have invented certain new and useful Improvements in Car-Roofs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it'ap-' pertains to make and use the same.

This invention relates to roofs, and more particularly to the class of wooden roofs; and it has for its object to provide a structure wherein with a single thickness "of boards leakage through the roof at the joints of the boards will be prevented.

Other objects and advantages of the invention will be understood from'the following description.

In the drawing forming a portion of this specification the figure is a sectional perspective view showing a portion of a roof embodying the present invention.

Referring now to the drawing, there is shown a portion of a roof including the boards or planks 20, 21, and 22. The planks are duplicates of one another, so that the description of one will suffice for all. Referring then to the plank 20, it will be noted that the upper and lower portions thereof are offset laterally with respect to each other, the upper portion projecting laterally beyond the lower portion at one side, as shown at 23, while the lower portion projects laterally in the opposite direction beyond the upper portion, as shown at 24. The outer face of the portion 23 is beveled at an obtuse angle to the upper face, while the opposite side face of the upper portion is beveled at an acute angle to the upper face, so that the beveled faces are parallel. The outer portion of the under face of the part 23 is flat, as shown at 25, while the inner portion is concave, as shown at 26, the curvature of this concavity, which extends transversely of the plank, being continued in the direction of thebottom of the plank to a point slightly distant from the bottom, as shown. The laterally-projecting portion 24 of the bottom of the plank Serial No. 101,758. (No model.)

formed a channel or conduit 27, extending ing lower portion of the other plank, with the upwardly-projecting portion or rounded flange 28 engaging in the channel in the under side of the portion 23 and with the beveled faces of the upper portions in contact. This construction prevents one plank from being lifted straight up from the next and also prevents it from being moved in a direct lateral direction, and this without the use of light and weak beads or tongues. With this construction it will be seen that any leakage that may pass between the beveled faces will enter the channel'or conduit 27 and will pass therethrough to the edge of the roof, where it will be discharged. The rounded flange 28 prevents the water passing from the channel orconduit 27, and thence from between the meeting edges at the under side of the roof. I

What is'claimed is 1. A roof comprising planks each having its upper and lower portions projecting laterally in opposite directions each beyond the other and lying with the projecting upper portion of one upon the projecting lower portion of the other, the projecting lower portion of each plank having a longitudinally-extending channel formed in its upper face, and having an upwardly-extending bead at the outer edge of the channel, andthe laterally-extending upper portion of each plank having a groove in its under face in which the bead is fitted to hold the planks against lateral movement with respect to each other, the free end of the laterally-extending upper portion of each plank and the corresponding face of the next plank having one a projection and the other a recess to receive the projection to prevent vertical movement of each plank with respect to the next.

2. Aroof comprisingplanks each having its upper and lower portions projecting laterally plank having a groove in its under face in which the bead is fitted to hold the planks against lateral movement with respect to each other.

In testimony whereof I affix my signature in presence of two witnesses.

ALVA W. WILCOX.

Witnesses:

BERTHA. MOORE, CHARLES L. FLORY. 

